filtercoeff~
Description
The filtercoeff~ object is a signal-rate filter coefficient calculator for the biquad~ object. It calculates the filter coefficients from three higher-level parameters: frequency, amplitude and resonance (Q) or slope (S). Its internal calculations are based on those of the filtergraph~ object.
Examples
Arguments
default-filter-type [symbol]
A symbol argument may be used to set the default filter type (highpass, lowpass, etc...).
resampling-factor [int]
An optional second argument can be used to specify a resampling factor.
Attributes
Common Box Attributes
annotation [symbol]
Sets the text that will be displayed in the Clue window when the user moves the mouse over the object.
background [int] (default: 0)
Adds or removes the object from the patcher's background layer.
adds the object to the background layer, removes it. Objects in the background layer are shown behind all objects in the default foreground layer.color [4 floats]
Sets the color for the object box outline.
fontface [int]
Sets the type style used by the object. The options are:
plain
bold
italic
bold italic
Possible values:
0 = 'regular'
1 = 'bold'
2 = 'italic'
3 = 'bold italic'
fontname [symbol]
Sets the object's font.
fontsize [float]
Sets the object's font size (in points).
Possible values:
'8'
'9'
'10'
'11'
'12'
'13'
'14'
'16'
'18'
'20'
'24'
'30'
'36'
'48'
'64'
'72'
hidden [int] (default: 0)
Toggles whether an object is hidden when the patcher is locked.
hint [symbol]
Sets the text that will be displayed in as a pop-up hint when the user moves the mouse over the object in a locked patcher.
ignoreclick [int] (default: 0)
Toggles whether an object ignores mouse clicks in a locked patcher.
jspainterfile [symbol]
JS Painter File
patching_rect [4 floats] (default: 0. 0. 100. 0.)
Sets the position and size of the object in the patcher window.
position [2 floats]
Sets the object's x and y position in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its size unchanged.
presentation [int] (default: 0)
Sets whether an object belongs to the patcher's presentation.
presentation_rect [4 floats] (default: 0. 0. 0. 0.)
Sets the x and y position and width and height of the object in the patcher's presentation, leaving its patching position unchanged.
rect [4 floats]
Sets the x and y position and width and height of the object in both patching and presentation modes (if the object belongs to its patcher's presentation).
size [2 floats]
Sets the object's width and height in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its position unchanged.
textcolor [4 floats]
Sets the color for the object's text in RGBA format.
textjustification [int]
Sets the justification for the object's text.
Possible values:
0 = 'left'
1 = 'center'
2 = 'right'
varname [symbol]
Sets the patcher's scripting name, which can be used to address the object by name in pattr, scripting messages to thispatcher, and the js object.
Messages
int
Arguments
In 1st inlet: Sets the center or cutoff frequency parameter for the filter and causes output.
In 2nd inlet: Sets the gain parameter for the filter and causes output.
In 3rd inlet: Sets the Q (resonance) or S (slope) parameter for the filter and causes output. (note that the term slope is only used for the third parameter of shelving filters, and is roughly equivalent to resonance).
float
Arguments
In 2nd inlet: Sets the gain parameter for the filter and causes output.
In 3rd inlet: Sets the Q (resonance) or S (slope) parameter for the filter and causes output. (note that the term slope is only used for the third parameter of shelving filters, and is roughly equivalent to resonance)
list
Arguments
initial-gain [float]
Q [float]
allpass
Arguments
Q [float]
bandpass
Arguments
Q [float]
bandstop
Arguments
Q [float]
gainapass
Arguments
initial-gain [float]
Q [float]
gainbpass
Arguments
initial-gain [float]
Q [float]
gainbstop
Arguments
initial-gain [float]
Q [float]
gainhpass
Arguments
initial-gain [float]
Q [float]
gainlpass
Arguments
initial-gain [float]
Q [float]
gainresonant
Arguments
initial-gain [float]
Q [float]
highpass
Arguments
Q [float]
highshelf
Arguments
initial-gain [float]
Q [float]
lowpass
Arguments
Q [float]
lowshelf
Arguments
initial-gain [float]
Q [float]
off
Arguments
peaknotch
Arguments
initial-gain [float]
Q [float]
resamp
Arguments
resonant
Arguments
Q [float]
signal
In 2nd inlet: Sets the gain parameter for the filter and causes output.
In 3rd inlet: Sets the Q (resonance) or S (slope) parameter for the filter and causes output. (note that the term slope is only used for the third parameter of shelving filters, and is roughly equivalent to resonance)
Output
signal
The five signal outlets output signal-rate filter coefficients for the biquad~ object.
See Also
Name | Description |
---|---|
Sound Processing Techniques | Sound Processing Techniques |
allpass~ | Apply an allpass filter effect |
biquad~ | Two-pole, two-zero filter |
cascade~ | Cascaded series of biquad filters |
delay~ | Delay a signal |
filtergraph~ | Filter editor |
lores~ | Resonant lowpass filter |
reson~ | Resonant bandpass filter |
teeth~ | Comb filter with feedforward and feedback delay control |
Audio Filtering | Audio Filtering |